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公开(公告)号：CA3096607A1
公开(公告)日：2019-12-12
申请号：CA3096607
申请日：2019-05-31
Applicant: ALCON INC
Inventor： ZIEGER PETER , GRUENDIG MARTIN , BIRKNER SASCHA
IPC: A61B3/15
Abstract: Disclosed are systems and methods for aligning an ophthalmic device with respect to an eye of a patient. In one disclosure, the system may include an ophthalmic device with an on-axis and an off-axis. The system may include an on-axis illuminator that emits light that is reflected by the eye of the patient to form an on-axis reflection having a center. The system may include an on-axis camera pointed along the on-axis. The system may include an off-axis illuminator that emits light that is reflected by the eye to form an off-axis reflection having a center. The system may include an off-axis camera pointed along the off-axis. The ophthalmic device may be operable to be aligned with respect to the eye of the patient when the on-axis is substantially normal to the center of the on-axis reflection and the off-axis is substantially normal to the center of the off-axis reflection.
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公开(公告)号：CA3146511A1
公开(公告)日：2021-04-01
申请号：CA3146511
申请日：2020-09-18
Applicant: ALCON INC
Inventor： BIRKNER SASCHA , GRUNDIG MARTIN , ZIEGER PETER
Abstract: Systems and methods for tracking the position and condition of an eye during an ophthalmic procedure include an ophthalmic device configured to measure characteristics of an eye, an eye tracker configured to capture a stream of eye images, and a logic device configured to analyze the stream of images to determine whether the eye is fixating on a target object, detect a predetermined blink sequence in the first stream of images, delay for a predetermined tear stabilization period, start a stable tear film interval, and during the stable tear film interval, capture at least one measurement of the eye using the ophthalmic device when the eye is fixating. The blink sequence may include a plurality of blinks in succession and the detection of the blink sequence may include processing the images through a neural network trained to detect an open eye and/or a closed eye.
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公开(公告)号：AU2016432713A1
公开(公告)日：2019-05-16
申请号：AU2016432713
申请日：2016-12-17
Applicant: ALCON INC
Inventor： EIL MARTIN , MASSOW OLE , THOMAS CARSTEN , BIRKNER SASCHA
IPC: A61B3/107 , G01B11/255
Abstract: A system (100) and method (300) for determining eye surface contour using multifocal keratometry is disclosed. The system includes a light source (102), a light detector (116), a processor (118), a non-transitory machine-readable medium communicatively coupled to the processor, and instructions stored on the non-transitory machine-readable medium. The instructions, when loaded and executed by the processor, cause the processor to project a light (302), using the light source, onto a plurality of surfaces (108, 112, 114) of an eye (106); create (304), using the light detector, an image of a plurality of reflections, each of the plurality of reflections created by reflecting the light off of one of the plurality of surfaces of the eye; determine (306) that the plurality of reflections are in focus in the image; and calculate (314), based on the determination, a curvature of the plurality of surfaces of the eye based on the image.
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公开(公告)号：ES2993143T3
公开(公告)日：2024-12-23
申请号：ES20757970
申请日：2020-08-12
Applicant: ALCON INC
Inventor： GRÜNDIG MARTIN , BIRKNER SASCHA
Abstract: Los sistemas y métodos para rastrear el movimiento ocular durante un procedimiento de diagnóstico incluyen un rastreador ocular que captura imágenes de un ojo y un procesador de control configurado para detectar una posición y orientación ocular en cada una de las imágenes, determinar una posición y orientación de fijación ocular con respecto a un eje óptico del rastreador ocular, estimar parámetros de fijación ocular basándose al menos en parte en la posición y orientación de fijación ocular determinadas, y rastrear la posición y orientación ocular mediante el análisis de las imágenes para determinar la posición y orientación ocular con respecto a los parámetros de fijación ocular. Los parámetros de fijación ocular pueden comprender una posición y orientación de referencia del ojo cuando está fijado. Se construye un histograma de las posiciones y orientaciones oculares detectadas y se analiza para determinar una posición y orientación de fijación ocular. (Traducción automática con Google Translate, sin valor legal)
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公开(公告)号：ES2900248T3
公开(公告)日：2022-03-16
申请号：ES16831524
申请日：2016-12-17
Applicant: ALCON INC
Inventor： EIL MARTIN , MASSOW OLE , THOMAS CARSTEN , BIRKNER SASCHA
IPC: A61B3/107 , G01B11/25 , G01B11/255
Abstract: Un sistema (100) para queratometría que comprende: una fuente (102) de luz; un detector (116) de luz que incluye una lente de fluido que se puede enfocar con adaptación (115); un procesador (235); un medio (240) legible por máquina no transitorio acoplado comunicativamente al procesador (235); e instrucciones almacenadas en el medio (240) legible por máquina no transitorio, provocando las instrucciones, cuando se carguen y sean ejecutadas por el procesador (235), que el procesador (235): proyecte, utilizando la fuente (102) de luz, una luz sobre una pluralidad de superficies (108, 112) de un ojo (106); cree, utilizando el detector (116) de luz y la lente de fluido que se puede enfocar con adaptación (115), una pluralidad de imágenes de una pluralidad de reflejos (110), creándose cada uno de la pluralidad de reflejos (110) al reflejar la luz de una de la pluralidad de superficies (108, 112) del ojo (106), creándose cada una de la pluralidad de imágenes a una profundidad de enfoque diferente y un plano de enfoque diferente; determine, a partir de la pluralidad de imágenes, imágenes que tengan una pluralidad de reflejos (110) en enfoque; y calcule, en función de las imágenes determinadas, una curvatura de la pluralidad de superficies (108, 112) del ojo (106).
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Patent Agency Ranking
公开(公告)号：CA3145664A1
公开(公告)日：2021-02-18
申请号：CA3145664
申请日：2020-08-12
Applicant: ALCON INC
Inventor： GRUNDIG MARTIN , BIRKNER SASCHA
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include an eye tracker capturing images of an eye, and a control processor configured to detect an eye position and orientation in each of the images, determine an eye fixation position and orientation relative to an optical axis of the eye tracker, estimate eye fixation parameters based at least in part on the determined eye fixation position and orientation, and track the eye position and orientation by analyzing the images to determine the eye position and orientation relative to the eye fixation parameters. The eye fixation parameters may comprise a reference position and orientation of the eye when fixated. A histogram is constructed of detected eye positions and orientations and analyzed to determine an eye fixation position and orientation.
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公开(公告)号：AU2020328265A1
公开(公告)日：2022-01-27
申请号：AU2020328265
申请日：2020-08-12
Applicant: ALCON INC
Inventor： GRÜNDIG MARTIN , BIRKNER SASCHA
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include an eye tracker capturing images of an eye, and a control processor configured to detect an eye position and orientation in each of the images, determine an eye fixation position and orientation relative to an optical axis of the eye tracker, estimate eye fixation parameters based at least in part on the determined eye fixation position and orientation, and track the eye position and orientation by analyzing the images to determine the eye position and orientation relative to the eye fixation parameters. The eye fixation parameters may comprise a reference position and orientation of the eye when fixated. A histogram is constructed of detected eye positions and orientations and analyzed to determine an eye fixation position and orientation.
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公开(公告)号：CA3145659A1
公开(公告)日：2021-02-18
申请号：CA3145659
申请日：2020-08-12
Applicant: ALCON INC
Inventor： GRUNDIG MARTIN , BIRKNER SASCHA
Abstract: Systems and methods for tracking eye movement during a diagnostic procedure include a retina imaging system configured to capture a first plurality of images of an eye and detect a presence of a fovea, an eye tracker configured to capture a second plurality of images of the eye and track a position and orientation of the eye; and a control processor configured to synchronize the first and second plurality of images, determine a time at which the fovea is detected in the first plurality of images, and determine one or more images from the second plurality of images to be classified as representative of fixation. The classified images are analyzed to determine eye fixation status during the diagnostic procedure based on eye tracking data.
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公开(公告)号：AU2019281356A1
公开(公告)日：2020-10-29
申请号：AU2019281356
申请日：2019-05-31
Applicant: ALCON INC
Inventor： ZIEGER PETER , GRUENDIG MARTIN , BIRKNER SASCHA
IPC: A61B3/15
Abstract: Disclosed are systems and methods for aligning an ophthalmic device with respect to an eye of a patient. In one disclosure, the system may include an ophthalmic device with an on-axis and an off-axis. The system may include an on-axis illuminator that emits light that is reflected by the eye of the patient to form an on-axis reflection having a center. The system may include an on-axis camera pointed along the on-axis. The system may include an off-axis illuminator that emits light that is reflected by the eye to form an off-axis reflection having a center. The system may include an off-axis camera pointed along the off-axis. The ophthalmic device may be operable to be aligned with respect to the eye of the patient when the on-axis is substantially normal to the center of the on-axis reflection and the off-axis is substantially normal to the center of the off-axis reflection.
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公开(公告)号：AU2020355335A1
公开(公告)日：2022-02-03
申请号：AU2020355335
申请日：2020-09-18
Applicant: ALCON INC
Inventor： BIRKNER SASCHA , GRÜNDIG MARTIN , ZIEGER PETER
Abstract: Systems and methods for tracking the position and condition of an eye during an ophthalmic procedure include an ophthalmic device configured to measure characteristics of an eye, an eye tracker configured to capture a stream of eye images, and a logic device configured to analyze the stream of images to determine whether the eye is fixating on a target object, detect a predetermined blink sequence in the first stream of images, delay for a predetermined tear stabilization period, start a stable tear film interval, and during the stable tear film interval, capture at least one measurement of the eye using the ophthalmic device when the eye is fixating. The blink sequence may include a plurality of blinks in succession and the detection of the blink sequence may include processing the images through a neural network trained to detect an open eye and/or a closed eye.
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